library #lib /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;
import "dart:_internal" as _in;

abstract class A<T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::A<self::A::T%>
    : super core::Object::•()
    ;
}
class B<T extends core::Object? = dynamic> extends self::A<self::B::T%> {
  synthetic constructor •() → self::B<self::B::T%>
    : super self::A::•()
    ;
[@vm.procedure-attributes.metadata=methodOrSetterCalledDynamically:false,getterCalledDynamically:false,hasThisUses:false,hasTearOffUses:false,methodOrSetterSelectorId:1,getterSelectorId:2] [@vm.unboxing-info.metadata=(i)->i]  method testT1([@vm.inferred-type.metadata=dart.core::_Smi (value: 42)] dynamic x) → dynamic
    return _in::unsafeCast<self::B::T%>(x);
[@vm.procedure-attributes.metadata=methodOrSetterCalledDynamically:false,getterCalledDynamically:false,hasThisUses:false,hasTearOffUses:false,methodOrSetterSelectorId:3,getterSelectorId:4]  method testT2([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
    return _in::unsafeCast<self::B::T%>(x);
[@vm.procedure-attributes.metadata=methodOrSetterCalledDynamically:false,getterCalledDynamically:false,hasThisUses:false,hasTearOffUses:false,methodOrSetterSelectorId:5,getterSelectorId:6]  method testT3([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
    return _in::unsafeCast<self::B::T%>(x);
[@vm.procedure-attributes.metadata=methodOrSetterCalledDynamically:false,getterCalledDynamically:false,hasThisUses:false,hasTearOffUses:false,methodOrSetterSelectorId:7,getterSelectorId:8] [@vm.unboxing-info.metadata=(i)->i]  method testNullableT1([@vm.inferred-type.metadata=dart.core::_Smi (value: 42)] dynamic x) → dynamic
    return _in::unsafeCast<self::B::T?>(x);
[@vm.procedure-attributes.metadata=methodOrSetterCalledDynamically:false,getterCalledDynamically:false,hasThisUses:false,hasTearOffUses:false,methodOrSetterSelectorId:9,getterSelectorId:10]  method testNullableT2([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
    return _in::unsafeCast<self::B::T?>(x);
}
[@vm.unboxing-info.metadata=(i)->i]static method testInt1([@vm.inferred-type.metadata=dart.core::_Smi (value: 42)] dynamic x) → dynamic
  return _in::unsafeCast<core::int>(x);
static method testInt2([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
  return _in::unsafeCast<core::int>(x);
[@vm.unboxing-info.metadata=(i)->i]static method testNullableInt1([@vm.inferred-type.metadata=dart.core::_Smi (value: 42)] dynamic x) → dynamic
  return _in::unsafeCast<core::int?>(x);
static method testNullableInt2([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
  return _in::unsafeCast<core::int?>(x);
static method testDynamic([@vm.inferred-type.metadata=dart.core::_OneByteString (value: hi)] dynamic x) → dynamic
  return _in::unsafeCast<dynamic>(x);
static method testObject([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
  return x;
static method testNullableObject([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
  return x;
static method testAOfNum1([@vm.inferred-type.metadata=#lib::B<dart.core::int>] dynamic x) → dynamic
  return _in::unsafeCast<self::A<core::num>>(x);
static method testAOfNum2([@vm.inferred-type.metadata=#lib::B<dart.core::int?>] dynamic x) → dynamic
  return _in::unsafeCast<self::A<core::num>>(x);
static method testAOfNum3([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
  return _in::unsafeCast<self::A<core::num>>(x);
static method testAOfNullableNum([@vm.inferred-type.metadata=#lib::B<dart.core::int?>] dynamic x) → dynamic
  return _in::unsafeCast<self::A<core::num?>>(x);
static method testNullableAOfNum([@vm.inferred-type.metadata=dart.core::Null? (value: null)] dynamic x) → dynamic
  return _in::unsafeCast<self::A<core::num>?>(x);
static method testNullableAOfNullableNum([@vm.inferred-type.metadata=#lib::B<dart.core::int?>] dynamic x) → dynamic
  return _in::unsafeCast<self::A<core::num?>?>(x);
static method main() → void {
  self::testInt1(42);
  self::testInt2(null);
  self::testNullableInt1(42);
  self::testNullableInt2(null);
  self::testDynamic("hi");
  self::testObject(null);
  self::testNullableObject(null);
  self::testAOfNum1(new self::B::•<core::int>());
  self::testAOfNum2(new self::B::•<core::int?>());
  self::testAOfNum3(null);
  self::testAOfNullableNum(new self::B::•<core::int?>());
  self::testNullableAOfNum(null);
  self::testNullableAOfNullableNum(new self::B::•<core::int?>());
  [@vm.direct-call.metadata=#lib::B.testT1] [@vm.inferred-type.metadata=!? (skip check)] new self::B::•<core::int>().{self::B::testT1}(42);
  [@vm.direct-call.metadata=#lib::B.testT2] [@vm.inferred-type.metadata=!? (skip check)] new self::B::•<core::int>().{self::B::testT2}(null);
  [@vm.direct-call.metadata=#lib::B.testT3] [@vm.inferred-type.metadata=!? (skip check)] new self::B::•<core::int?>().{self::B::testT3}(null);
  [@vm.direct-call.metadata=#lib::B.testNullableT1] [@vm.inferred-type.metadata=!? (skip check)] new self::B::•<core::int>().{self::B::testNullableT1}(42);
  [@vm.direct-call.metadata=#lib::B.testNullableT2] [@vm.inferred-type.metadata=!? (skip check)] new self::B::•<core::int>().{self::B::testNullableT2}(null);
}